﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading;
using System.Text.RegularExpressions;
using TSharp.Core.Util.Text;

namespace TSharp.Core.Util
{
    /// <summary>
    /// 
    /// </summary>
    /// <author>
    /// tangjingbo
    /// </author>
    /// <remarks>
    /// tangj15 at 2012-5-4 11:48
    /// </remarks>
    partial class StringUtil
    {
        private static readonly string objFormat = @"
<div style='border:1px solid #000;  margin:5px 5px 5px 5px;'>
{0} : {1}</div>
";
        /// <summary>
        /// Gets the ojbect.
        /// </summary>
        /// <param name="value">The value.</param>
        /// <returns></returns>
        public static StringBuilder GetOjbect(object value)
        {
            var result = new StringBuilder();
            if (Convert.GetTypeCode(value) != TypeCode.Object)
                result.AppendFormat(objFormat, value.GetType().Name, value);
            else
                foreach (PropertyDescriptor a in TypeDescriptor.GetProperties(value))
                {
                    var pValue = a.GetValue(value);
                    result.AppendFormat(objFormat, value.GetType().Name, GetOjbect(pValue));
                }
            return result;
        }


    }

    public static partial class StringUtil
    {
        private const String OrderChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        private static long lastOrder;

        /// <summary> 生成一个新的、递增的顺序号</summary>
        /// <returns> 返回顺序号
        /// </returns>
        public static long NewOrder()
        {
            var newOrder = DateTime.Now.Ticks >> 12;
            while (true)
            {
                var oldOrder = lastOrder;
                if (newOrder <= oldOrder)
                    newOrder = oldOrder + 1;
                if (Interlocked.CompareExchange(ref lastOrder, newOrder, oldOrder) == oldOrder)
                {
                    //成功将lastOrder修改为newOrder
                    return newOrder;
                }
                //继续下一次尝试
            }
        }

        /// <summary> 生成一个新的、递增的顺序号字符串</summary>
        /// <returns> 返回顺序号字符串，长度为10
        /// </returns>
        public static string NewStringOrder()
        {
            var order = NewOrder();
            var buffer = new char[10];
            var index = 9;
            while (order > 0 && index >= 0)
            {
                buffer[index--] = OrderChars[(int)(order % 36)];
                order = order / 36;
            }
            while (index >= 0)
                buffer[index--] = '0';
            return new string(buffer);
        }

        /// <summary> 生成一个新的、递增的顺序号字符串</summary>
        public static string NewStringOrder(int length)
        {
            if (length <= 0) return string.Empty;
            var order = NewOrder();
            var buffer = new char[length];
            var index = length - 1;
            while (order > 0 && index >= 0)
            {
                buffer[index--] = OrderChars[(int)(order % 36)];
                order = order / 36;
            }
            while (index >= 0)
                buffer[index--] = '0';
            return new string(buffer);
        }

        /// <summary>
        /// Returns a <see cref="System.String"/> that represents this instance.
        /// </summary>
        /// <param name="inputNCR">The input NCR.</param>
        /// <returns>
        /// A <see cref="System.String"/> that represents this instance.
        /// </returns>
        public static string ToString(string inputNCR)
        {
            //TODO:需要完成NCR的转为Unicode是否正确
            return Regex.Replace(inputNCR, "&#(?<ncr>\\d+?);", x =>
                {
                    return Convert.ToChar(int.Parse(x.Groups["ncr"].Value)).ToString();
                });
        }

        //  \uXXXX
        /// <summary>
        /// Toes the NCR.
        /// </summary>
        /// <param name="input">The input.</param>
        /// <returns></returns>
        public static string ToNCR(string input)
        {
            var ret = new StringBuilder();
            foreach (var c in input)
            {
                ret.AppendFormat("{0:x4}", (int)c);
            }
            return ret.ToString();
        }

        private static string StringToHexString(string s, Encoding encode)
        {
            byte[] b = encode.GetBytes(s);//按照指定编码将string编程字节数组
            string result = string.Empty;
            for (int i = 0; i < b.Length; i++)//逐字节变为16进制字符，以%隔开
            {
                result += "%" + Convert.ToString(b[i], 16);
            }
            return result;
        }
        private static string HexStringToString(string hs, Encoding encode)
        {
            //以%分割字符串，并去掉空字符
            string[] chars = hs.Split(new char[] { '%' }, StringSplitOptions.RemoveEmptyEntries);
            byte[] b = new byte[chars.Length];
            //逐个字符变为16进制字节数据
            for (int i = 0; i < chars.Length; i++)
            {
                b[i] = Convert.ToByte(chars[i], 16);
            }
            //按照指定编码将字节数组变为字符串
            return encode.GetString(b);
        }

        /// <summary>
        /// 字符串转16进制字节数组
        /// </summary>
        /// <param name="hexString"></param>
        /// <returns></returns>
        private static byte[] strToToHexByte(string hexString)
        {
            hexString = hexString.Replace(" ", "");
            if ((hexString.Length % 2) != 0)
                hexString += " ";
            byte[] returnBytes = new byte[hexString.Length / 2];
            for (int i = 0; i < returnBytes.Length; i++)
                returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
            return returnBytes;
        }


        /// <summary>
        /// 字节数组转16进制字符串
        /// </summary>
        /// <param name="bytes"></param>
        /// <returns></returns>
        public static string byteToHexStr(byte[] bytes)
        {
            string returnStr = "";
            if (bytes != null)
            {
                for (int i = 0; i < bytes.Length; i++)
                {
                    returnStr += bytes[i].ToString("X2");
                }
            }
            return returnStr;
        }

        /// <summary>
        /// 从汉字转换到16进制
        /// </summary>
        /// <param name="s"></param>
        /// <param name="charset">编码,如"utf-8","gb2312"</param>
        /// <param name="fenge">是否每字符用逗号分隔</param>
        /// <returns></returns>
        public static string ToHex(string s, string charset, bool fenge)
        {
            if ((s.Length % 2) != 0)
            {
                s += " ";//空格
                //throw new ArgumentException("s is not valid chinese string!");
            }
            System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
            byte[] bytes = chs.GetBytes(s);
            string str = "";
            for (int i = 0; i < bytes.Length; i++)
            {
                str += string.Format("{0:X}", bytes[i]);
                if (fenge && (i != bytes.Length - 1))
                {
                    str += string.Format("{0}", ",");
                }
            }
            return str.ToLower();
        }
        ///<summary>
        /// 从16进制转换成汉字
        /// </summary>
        /// <param name="hex"></param>
        /// <param name="charset">编码,如"utf-8","gb2312"</param>
        /// <returns></returns>
        public static string UnHex(string hex, string charset)
        {
            if (hex == null)
                throw new ArgumentNullException("hex");
            hex = hex.Replace(",", "");
            hex = hex.Replace("\n", "");
            hex = hex.Replace("\\", "");
            hex = hex.Replace(" ", "");
            if (hex.Length % 2 != 0)
            {
                hex += "20";//空格
            }
            // 需要将 hex 转换成 byte 数组。 
            byte[] bytes = new byte[hex.Length / 2];

            for (int i = 0; i < bytes.Length; i++)
            {
                try
                {
                    // 每两个字符是一个 byte。 
                    bytes[i] = byte.Parse(hex.Substring(i * 2, 2),
                    System.Globalization.NumberStyles.HexNumber);
                }
                catch
                {
                    // Rethrow an exception with custom message. 
                    throw new ArgumentException("hex is not a valid hex number!", "hex");
                }
            }
            System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
            return chs.GetString(bytes);
        }

    }
}
